"棒球是唯一一种在镜子里看起来是倒退的主要运动。"

Simplified Meaning:

Imagine you’re playing baseball and you’re holding a bat, ready to hit the ball. In a mirror, everything looks reversed. The hand you see as your left is actually your right and vice versa. The way you've prepared to hit the ball seems off in the mirror, looking like you’re doing everything the wrong way. Baseball, compared to other sports, really highlights this difference because its actions are more distinct and opposite when seen this way. For instance, in soccer, kicking a ball or running might look the same in a mirror, but in baseball, the swing of the bat and the direction of the throw are very noticeable and clearly reversed. This idea can help us understand that things might appear strange or incorrect when looked at from a different perspective, even if they are actually right. Just like seeing baseball movements in a mirror seem wrong, sometimes people might feel their efforts or actions are not right when they look at them critically. But, it’s important to trust the way things are supposed to be and keep practicing what you know is correct.